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claude-opus-5-5 alternatives

Compare active chat alternatives to claude-opus-5-5, including capabilities, context, pricing, and API changes.

Alternatives to claude-opus-5-5

The original model is active. Ranking uses shared reported capabilities and modalities, then the closest known context window, then model ID. Unknown context differences sort last. Similar metadata does not establish equivalent output quality.

Checking current pricing…
Original context: 1,000,000 tokens.

gpt-6-sol

Matching features: Tool calling, Vision, Long context, JSON mode, Streaming, Reasoning, text input, image input, json input, text output.

Original features not confirmed on this alternative: None. Missing reports are unknown, not confirmed losses.

Context: 1000000 → 1000000 tokens (+0).

Checking current pricing…

Change the request model ID from claude-opus-5-5 to gpt-6-sol.

Original interfaces: POST /v1/chat/completions, POST /v1/messages. Alternative interfaces: POST /v1/chat/completions. Adjust the endpoint and request body to the selected interface.

Original request

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A verified request for this exact model. Add your API key and run it.

Read the docs
curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-opus-5-5",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'

Alternative request

Start building

A verified request for this exact model. Add your API key and run it.

Read the docs
curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-6-sol",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'
Compare claude-opus-5-5 and gpt-6-sol

gpt-6.1-sol

Matching features: Tool calling, Vision, Long context, JSON mode, Streaming, Reasoning, text input, image input, json input, text output.

Original features not confirmed on this alternative: None. Missing reports are unknown, not confirmed losses.

Context: 1000000 → 1000000 tokens (+0).

Checking current pricing…

Change the request model ID from claude-opus-5-5 to gpt-6.1-sol.

Original interfaces: POST /v1/chat/completions, POST /v1/messages. Alternative interfaces: POST /v1/chat/completions. Adjust the endpoint and request body to the selected interface.

Original request

Start building

A verified request for this exact model. Add your API key and run it.

Read the docs
curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-opus-5-5",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'

Alternative request

Start building

A verified request for this exact model. Add your API key and run it.

Read the docs
curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-6.1-sol",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'
Compare claude-opus-5-5 and gpt-6.1-sol

anthropic/claude-sonnet-5-5

Matching features: Tool calling, Vision, Long context, JSON mode, Streaming, Reasoning, text input, image input, text output.

Original features not confirmed on this alternative: json input. Missing reports are unknown, not confirmed losses.

Context: 1000000 → 1000000 tokens (+0).

Checking current pricing…

Change the request model ID from claude-opus-5-5 to anthropic/claude-sonnet-5-5.

Original interfaces: POST /v1/chat/completions, POST /v1/messages. Alternative interfaces: POST /v1/chat/completions, POST /v1/messages. The published API interfaces are unchanged.

Compare claude-opus-5-5 and anthropic/claude-sonnet-5-5

claude-fable-5-1

Matching features: Tool calling, Vision, Long context, JSON mode, Streaming, Reasoning, text input, image input, text output.

Original features not confirmed on this alternative: json input. Missing reports are unknown, not confirmed losses.

Context: 1000000 → 1000000 tokens (+0).

Checking current pricing…

Change the request model ID from claude-opus-5-5 to claude-fable-5-1.

Original interfaces: POST /v1/chat/completions, POST /v1/messages. Alternative interfaces: POST /v1/chat/completions, POST /v1/messages. The published API interfaces are unchanged.

Compare claude-opus-5-5 and claude-fable-5-1

claude-haiku-5-5

Matching features: Tool calling, Vision, Long context, JSON mode, Streaming, Reasoning, text input, image input, text output.

Original features not confirmed on this alternative: json input. Missing reports are unknown, not confirmed losses.

Context: 1000000 → 1000000 tokens (+0).

Checking current pricing…

Change the request model ID from claude-opus-5-5 to claude-haiku-5-5.

Original interfaces: POST /v1/chat/completions, POST /v1/messages. Alternative interfaces: POST /v1/chat/completions, POST /v1/messages. The published API interfaces are unchanged.

Compare claude-opus-5-5 and claude-haiku-5-5

claude-opus-4-8

Matching features: Tool calling, Vision, Long context, JSON mode, Streaming, Reasoning, text input, image input, text output.

Original features not confirmed on this alternative: json input. Missing reports are unknown, not confirmed losses.

Context: 1000000 → 1000000 tokens (+0).

Checking current pricing…

Change the request model ID from claude-opus-5-5 to claude-opus-4-8.

Original interfaces: POST /v1/chat/completions, POST /v1/messages. Alternative interfaces: POST /v1/chat/completions, POST /v1/messages. The published API interfaces are unchanged.

Compare claude-opus-5-5 and claude-opus-4-8

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